Fast-passage microwave molecular spectroscopy with frequency sweeping
Fast-passage microwave molecular spectroscopy with frequency sweeping
复制标题
具有扫频功能的快速通道微波分子光谱
DOI：
10.1051/epjap:2004008
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发表时间：
2004
影响因子：
1
通讯作者：
V. Vaks
中科院分区：
文献类型：
--
作者：
V. Khodos;D. Ryndyk;V. Vaks
本文提出了一种基于快通效应的分子微波光谱分析方法。快速通过效应是使用在吸收线上的快速频率扫描来激发测试分子的相干自发辐射。我们表明，线的形状可以重建从接收到的检测器信号与使用希尔伯特和傅立叶变换。我们发现快通谱仪的灵敏度比普通脉冲傅里叶变换谱仪的灵敏度高。该方法为混合气体的快速分析提供了一种有效的工具。
We propose a new method of molecular microwave spectroscopy together with analysis of resonance line shapes, based on the fast passage effect. The fast passage effect is the excitation of coherent spontaneous radiation of tested molecules using a fast frequency sweep over the absorption line. We show that the line shape can be reconstructed from the received detector signal with the use of Hilbert and Fourier transformations. We find that sensitivity of a fast passage spectrometer is higher than that of an ordinary pulsed Fourier-transform spectrometer. The proposed method is a useful tool for fast analysis of gas mixtures.